Portable drill



(No Model.) 3 Sheets-Sheet 1.

W. SANDIFORD.

PORTABLE DRILL.

No. 287.866 Patented Nov. 6, 1883.

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W. SANDIFORD.

- PORTABLE DRILL.

No. 287.866. Patented Nov. 6, 1883.

Q (N0 Model asneem-sneet a.

W. SANDIPORD.

PORTABLE DRILL.

Patented N016, 1883.

l L itness es;

. Totall whom it may concern:

UNITED STATES s PATENT ,OFFIGE,

WILLIAM'SANDIFORD, or Jonrnr, I LrNoIs.

PORTABLE, D/RI'LL.

SPEGIFICATIONfm-mingpartof Le tters Patent No. 287,866, dated November6, i883.

I Application filed .May 15.1883; (No model.)

. cipally, in the construction of the frame, by

means of which the drill can be clamped to a column in such manner thatthe drill may be pointed in any direction by means of a universal joint,which supports the drill-stock, and so that its attachment to the columnis of such character and strength that any amount of pressure can bebrought, to bear on the drill against the face or side of the column.

Referring to thedrawings, 1? represents a column to which thedrill-frame is attached.

A pair of parallel bars, a, having hooks t t at their outer ends to hookbehind the column, and boxes a a at their inner ends, through which thesquare bar or rod A passes, are held against the sides of the column bymeans of the hooked bolts 0 0, link 0', and nuts n n,

the set-screws d d having been first tightened sufficiently to preventsaid bars a a from being parts are held together bya screw, 1", so thatbrought together at their inner ends by said rods 0 c and nuts "It n. Bythis arrangement the bars a a are clamped against the sides of thecolumn, and form a support to sustain the drill on the horizontal bar A.

D is a metal sleeve that sleeves on over the horizontal bar A and intothe box D, so that it can slide along on said bar A to any placedesired, and will permit box D to move around it oron it as a spindle.The box D is split at the side toward the column, and the two by saidscrew such frictional contact may be given said box D on said sleeve Dthat it will not move thereon when not desired. The sleeve drill on itswork will prevent the sleeve D .the nut an on the end of said spindle.

7 over each other.

' from sliding out of place. The box D is provided at its rear side withan integral standard, B, having acentral Vertical aperture for thereception of the shaft B which terminates at its upper end 'in thethreaded box B, and is provided at its lower end with the nut m totighten it in said standard B, so it may not rotate therein when notdesired. The box B supports thedrill-spindle 3 which passes through itand through the hollow screw S, which screws'through said box B.

; The hollow screw S is for the purpose of carrying the drill forwardand holding it to its work by turning up said screw by means of thehandles S The foot of the drill-spindle y is enlarged to receive thesquare end of the drill or tool, and to form a shoulder, T for thehollow screw S to bear against to hold the tool against its work. Therear or outer end of the drill-spindle has the nut m, which holds thecrank L, which is sleeved on the drillspindle, from falling off. The hubg of the crank L sleeves on the outer end of the drillspindle androtates thereon. The drill-spindle y and at'its inner end thecrank-sleeve g are provided with a pair of disks, and- 9 the faces ofwhich are provided with ratchet-teeth cut in opposite directions, sothat they will engage with each other when the crank L is turnedforward. When the crank L turns forward,the offsets will engage witheach other and rotate the drill-spindle,

and withit the drill. 'Thesleeve 9? has its outer end bored or hollowedout, forming a chamber between its inner walls and spindle y, for thereception of the coil-spring b, which coils on said spindle, and is heldin place by This spring 7) holds the ratchet-faces of the parts g and gin contact, so their teeth will engage with each other. When the crank Lturns 1) in the sleeve 9 will permit the offsets to slip drill maybe'given a partial rotation by the crank when it is desired to use thedrill in such place that the crank cannot be rotated entirely around, asina corner or near the sideof a building, &c. The hub g is a portion ofandintegral with the disk 9, and both backward, the compression of thecoil-spring By this arrangement theare firmly keyed to thedrill-spindle. By this arrangement the drill is supported on what may betermed a universal joint, so that it may be adjusted to point andoperate in any desired position or direction.

The box D may be set along on the square bar or rod A at any place, andoutside of the bars a, when desired, out near the end of the said bar A.The drill may be turned to point directly downward, so it can be used asan ordinary vertical drill. The long slots z in the bars to enable thehooked rods 0 to be set any place along in said slot; and where thecolumn is very small, so the hooks t t cannot hold on it, another boltmay be passed through the slots near their outer ends, outside thecolumn, so as to clasp the outer ends of said horizontal bars againstthe column, to hold firmly against it.

Having thus described 1nyinvention,what I claim as new, and desire tosecure by Letters Patent, is as follows, to wit:

1.. The combination of the slotted bars a a, square bar A, hooked bolts0 0, link 0, boxes 13 B and D, sleeve D, shaft 13', drill-spindle y,feed-screw S, ratchet-plates g coil-spring b, set-screws (Z (Z, andcrank L, all adapted to operate as and for the purpose set forth.

2. ,In the portable drill described, the mechanism for varying thedirection of the point of the drill, in combination with the feed-screwS,ratchet-p1ates 9'9", and crank L, all adapted to operate as and forthe purpose set forth.

3. The combination of the box D, having theintegra-l standard B, shaft Bintegral with threaded box B, horizontal bar A, and drillspindle 3 alladapted to operate as and for the purpose set forth.

XVILLIAM SANDIFORD.

XVitn esses:

\VM. J. HU'roHINs, Tnos. H. HUTonINs.

